Company lists · Data refreshed September 2026

Top 25 Defence cybersecurity companies based in Columbia, United States

Name: Defence cybersecurity companies based in Columbia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 59 companies tracked

RevenueBase identified 59 defence cybersecurity companies headquartered in Columbia, United States as of September 2026 and tracks 2,531 professional contacts across them, including 693 with verified work emails. New York is the largest hub.

This list covers defence cybersecurity companies headquartered in Columbia, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

59Companies

2,531Contacts tracked

693Verified emails

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The 25 largest defence cybersecurity companies based in Columbia, United States

Ranked by team size

Top 25 of 59 defence cybersecurity companies based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to defence cybersecurity companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Planned Systems International	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	1,001-5,000	611 contacts →
	Indirect evidence “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Source: RevenueBase Database · checked Sep 21, 2026
2	OWL Cyber Defense	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	253 contacts →
	Partial evidence “Owl Cyber Defense provides hardened network security checkpoints for absolute threat prevention and secure data availability through cross domain and data diode solutions.” Source: RevenueBase Database · checked Sep 21, 2026
3	Sealing Technologies, A Parsons Company	Strong evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	119 contacts →
	Strong evidence “SealingTech, a Parsons Company, rapidly delivers innovative, agile cybersecurity solutions that modernize, protect, and defend the networks and systems of the federal government…” Source: RevenueBase Database · checked Sep 21, 2026
4	Synergy ECP	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	106 contacts →
	Partial evidence “Welcome to Synergy ECP, the most trusted partner in navigating the complex landscape of cybersecurity and digital transformation.” Source: RevenueBase Database · checked Sep 21, 2026
5	Advanced Programs, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “Embark on a mission with Advanced Programs, Inc,(API) – where innovation meets impact!” Source: RevenueBase Database · checked Sep 21, 2026
6	Silveredge Government Solutions	Strong evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	88 contacts →
	Strong evidence “SilverEdge, An SAIC Company, is a next generation provider of innovative and proprietary cybersecurity, software, and intelligence solutions for the Defense and Intelligence…” Source: RevenueBase Database · checked Sep 21, 2026
7	SCD Information Technology	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	72 contacts →
	Partial evidence “SCD exists to provide innovative, technologically superior information technology solutions to business professionals and defense agencies in the Baltimore, Washington and…” Source: RevenueBase Database · checked Sep 21, 2026
8	Sourcefire, Part Of Cisco	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	501-1,000	63 contacts →
	Partial evidence “Sourcefire, Inc.(Nasdaq:FIRE), a world leader in intelligent cybersecurity solutions, is transforming the way global mid- to large-size organizations and government agencies…” Source: RevenueBase Database · checked Sep 21, 2026
9	Masterpeace Solutions	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	60 contacts →
	Indirect evidence “Visit MasterPeace Solutions company website here- MasterPeace Solutions has emerged as one of the fastest growing advanced technology companies in the Mid-Atlantic region.” Source: RevenueBase Database · checked Sep 21, 2026
10	Jasint Innovative Solutions	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	58 contacts →
	Indirect evidence “JASINT is a Maryland based Limited Liability Company that began its business operations and staffing in July 2007.” Source: RevenueBase Database · checked Sep 21, 2026
11	Applied Network Solutions, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Partial evidence “We operate at the intersection of network engineering and cybersecurity, providing secure, scalable, and high-performing architectures for our customers.” Source: RevenueBase Database · checked Sep 21, 2026
12	Envieta Systems LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	57 contacts →
	Indirect evidence “Envieta’s mission is to secure our clients' systems through hardware, software and cryptographic expertise.” Source: RevenueBase Database · checked Sep 21, 2026
13	Clear Ridge Defense	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Partial evidence “Clear Ridge Defense, headquartered in Columbia, MD, is a boutique cyberspace operations defense contracting firm that specializes in acquiring full-spectrum cyberspace talent in…” Source: RevenueBase Database · checked Sep 21, 2026
14	Constellation Technologies, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	53 contacts →
	Indirect evidence “Constellation Technologies, Inc.(CTI) provides cyber engineers, integrators, administrators and experts that have the right blending of experiences and multi-spectral knowledge…” Source: RevenueBase Database · checked Sep 21, 2026
15	Cyberpoint International	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	34 contacts →
	Partial evidence “CyberPoint is dedicated to advancing the discipline of cybersecurity through imagination, technical excellence, and an unparalleled passion for our work.” Source: RevenueBase Database · checked Sep 21, 2026
16	SRC Technologies INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	30 contacts →
	Indirect evidence “SRC Technologies, INC provides information technology (IT) consultation services to government agencies and corporations alike, specializing in secure computing services.” Source: RevenueBase Database · checked Sep 21, 2026
17	Columbia Technology Partners	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Columbia Technology Partners is a National Security and Defense contractor committed to solving intricate and sensitive technology issues which face corporations and federal…” Source: RevenueBase Database · checked Sep 21, 2026
18	Ncyber	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	19 contacts →
	Indirect evidence “Ncyber ("en-cyber") is a data-driven information security company based in Columbia MD.” Source: RevenueBase Database · checked Sep 21, 2026
19	Bytoa, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “At Bytoa, we fuse cutting-edge technology with a warrior’s mindset.” Source: RevenueBase Database · checked Sep 21, 2026
20	Interconnect Defense	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “InterConnect Defense delivers a wide range of expertise to bring together all aspects of Computer Network Operations.” Source: RevenueBase Database · checked Sep 21, 2026
21	Eureka Strategic Consulting	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “eureka strategic is a small consulting firm dedicated to discovering and developing solutions to the most difficult problems our customers face.” Source: RevenueBase Database · checked Sep 21, 2026
22	Secure Innovations, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	13 contacts →
	Indirect evidence “Our highly-skilled professionals have an average of 20+ years of experience working with, and in, the public sector.” Source: RevenueBase Database · checked Sep 21, 2026
23	White Cliffs Consulting, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	9 contacts →
	Indirect evidence “White Cliffs Consulting is a small cyber intelligence and security firm providing high-end consulting and technical services in network analysis, software development and…” Source: RevenueBase Database · checked Sep 21, 2026
24	Cyber Protection Services	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Cyber Protection Services is a certified SDVOSB dedicated to protecting businesses against the cyber threats that evolve daily.” Source: RevenueBase Database · checked Sep 21, 2026
25	Camelot Secure	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	8 contacts →
	Partial evidence “Our Secure360 platform is a holistic redefinition of what world-class cybersecurity strategies can be.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: defence cybersecurity companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names defence cybersecurity companies.
Partial evidence: Its own public description names part of defence cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defence cybersecurity companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 59 defence cybersecurity companies based in Columbia, United States

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Defence cybersecurity companies based in Columbia, United States at a glance

As of Sep 21, 2026

27.4%Verified-email coverage

42.9Average contacts per company

11-50Median size (employees)

171.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Columbia, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 59 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among defence cybersecurity companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Columbia, United States whose own description of what they do matches “defence cybersecurity companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names defence cybersecurity companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among defence cybersecurity companies, and records with no verified work email. Companies headquartered outside Columbia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 693 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Defence cybersecurity companies by metro in the United States

Defence cybersecurity companies in New York101
Defence cybersecurity companies in Washington87
Defence cybersecurity companies in Austin71
Defence cybersecurity companies in Arlington61
Defence cybersecurity companies in Houston61
Defence cybersecurity companies in Miami61
Defence cybersecurity companies in Columbia59
Defence cybersecurity companies in Dallas59
Defence cybersecurity companies in San Francisco57
Defence cybersecurity companies in Atlanta52
Defence cybersecurity companies in Chicago47
Defence cybersecurity companies in Reston43
Defence cybersecurity companies in San Diego42
Defence cybersecurity companies in Tampa40
Defence cybersecurity companies in Huntsville38
Defence cybersecurity companies in San Antonio37
Defence cybersecurity companies in Herndon34
Defence cybersecurity companies in Mclean34
Defence cybersecurity companies in Denver33
Defence cybersecurity companies in Los Angeles30
Defence cybersecurity companies in Alexandria28
Defence cybersecurity companies in Ashburn28
Defence cybersecurity companies in Baltimore28
Defence cybersecurity companies in Boston28
Defence cybersecurity companies in Seattle27
Defence cybersecurity companies in Chantilly26
Defence cybersecurity companies in Fairfax26
Defence cybersecurity companies in Sheridan26
Defence cybersecurity companies in Las Vegas25
Defence cybersecurity companies in Orlando25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names defence cybersecurity companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many defence cybersecurity companies are there based in Columbia, United States?

RevenueBase identified 59 defence cybersecurity companies headquartered in Columbia, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Planned Systems International, headquartered in Columbia, tops this list with the largest team on record.

Which city has the most defence cybersecurity companies?

New York leads with 101 headquartered companies, followed by Washington (87) and Austin (71).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 693 verified decision-maker contacts tracked across these 59 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.